ul,li,body,div,dl,dd,ol,h1,h2,h3,h4,h5,pre,form,fieldset,legend,input{
    margin: 0;
    padding: 0;
}
a{
    text-decoration: none;
}
a,p,article{
    color: #fff;
}
ul,li{
    list-style: none
}
input,button,select,textarea{outline:none;}
*{
    outline: none;
    margin: 0;
    padding: 0;
    background-color: transparent;
}
*:visited{
    background-color: transparent;
}
a:focus{
    text-decoration: none;
}
@font-face {
    font-family: su;
    src: url("../su.ttf");
}
body{
    width: 100%;
    height: 100%;
    background:linear-gradient(to right, #ffdde1, #ee9ca7, #a7bfe8, #6190e8);
    /*background: url("../PIC/bg.jpg") no-repeat;*/
    background-size:500% 500%;
    /*background-size: cover;*/
    transition:background 3s ease;
    animation: background 10s infinite backwards;
    background-position:50% 50%;
}
@keyframes background {
    100%{
        background:linear-gradient(to right, #ffdde1, #ee9ca7, #a7bfe8, #6190e8);
    }
}
.w{
    width: 80%;
    margin: 0 auto;
}
button:focus{
    outline: none;
}
button:active{
    outline: none;
}
button:hover{
    outline: none;
}
